It was wildly popular, becoming the second-biggest boxset to air on BBC iPlayer with more than 40 million streams since being added to the service. A second season followed swiftly, but, unlike the first, which was adapted from a series of novels by Fleabag creator Phoebe Waller-Bridge, writing duties were handed over to Call the Midwife's Emerald Fennell.

The announcement comes at a time of debate around whether making more seasons of an acclaimed television show is necessarily bettering them. Last month, Natasha Lyonne announced her Netflix series Russian Doll was returning for a second series to mixed reactions, with many arguing the first season felt perfectly plotted and complete.

Mini-series Chernobyl proves the merits of keeping things short and sweet

HBO

As episode lengths get longer, and successful shows add more and more seasons to keep already invested audiences, fatigue at how much of our time is being taken up starts to kick in. It might be why the biggest television hit of the year thus far has been mini-series Chernobyl.The gripping retelling of the 1986 nuclear disaster managed to capture the political and societal fallout of the tragedy, as well as break down the complicated science of the accident, in just five episodes.

The second season of Killing Eve was criticised for not reaching the same heights as the first, with the chemistry between Villanelle and MI5 agent Eve Polastri (Sandra Oh) never reaching quite the same boiling point. Despite picking up minutes after the shocking stabbing of the season one finale, the show has to step back from this cliff-edge to keep going, and at times it struggles to rouse the same curiosity about where this is all leading.

Jodie Comer as Villanelle in Killing Eve season 2

BBC

While there are excellent human observations of both women, their obsession with each other feels less subtly drawn, while wacky outfits like Villanelle's comic book pyjamas feel too obviously included to inspire memes and internet reactions. The dip in quality was, perhaps unfairly, blamed by some on the absence of Waller-Bridge's writing, a difference made more noticeable by the fact the season was airing at the same time as her faultless second instalment of Fleabag.

It was around the same time that Daniel Craig personally called her in to "liven up" the scrip for Bond 25, further proving that she's one of the most sought-after writing talents working at the moment.

Will her inclusion in Killing Eve 3 liven it up in a similar way? While her entering the world of Villanelle and Eve for the first time will undoubtedly be a draw for viewers, it may not be enough to recapture the magic, especially she won't be penning the script again. After the finale of season 2, BBC America immediately announced a third, with show-runner Suzanne Heathcote fronting the season as the torch is passed to another woman.

Can the show overcome its difficult second season, or is it a one season wonder that should be calling time? Killing Waller-Bridge on-screen could well set it free from her legacy. Failing that, it would be a good way to go out with a bang.

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